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Submission #659917

# Submission time Handle Problem Language Result Execution time Memory
659917 2022-11-19T17:18:32 Z peijar Rarest Insects (IOI22_insects) C++17
100 / 100
 61 ms 492 KB 
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int randint(int lb, int ub) {
  return uniform_int_distribution<int>(lb, ub)(rng);
}

int min_cardinality(int N) {
  int nbCC = 0;
  vector<int> toProcess;
  set<int> inside;
  for (int i = 0; i < N; ++i) {
    move_inside(i);
    if (i and press_button() == 2)
      move_outside(i), toProcess.push_back(i);
    else
      nbCC++, inside.insert(i);
  }
  if (nbCC == 1)
    return N;
  shuffle(toProcess.begin(), toProcess.end(), rng);
  int lo = 1, up = N / nbCC;
  while (lo < up) {
    int mid = (lo + up + 1) / 2;
    vector<int> popped;
    vector<int> insideMachine;
    vector<int> notProcessed;
    for (int u : toProcess) {
      if ((int)inside.size() == nbCC * mid) {
        popped.push_back(u);
      } else {
        move_inside(u);
        inside.insert(u);
        if (press_button() > mid)
          popped.push_back(u), move_outside(u), inside.erase(u);
        else
          insideMachine.push_back(u);
      }
    }
    if ((int)popped.size() == N - mid * nbCC) {
      toProcess = popped;
      lo = mid;
    } else {
      for (int u : insideMachine)
        move_outside(u), inside.erase(u);
      toProcess = insideMachine;
      for (int x : notProcessed)
        toProcess.push_back(x);
      N = toProcess.size() + inside.size();
      up = mid - 1;
    }
  }
  return lo;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 2 ms 304 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 3 ms 308 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 6 ms 300 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 5 ms 308 KB Output is correct
20 Correct 4 ms 304 KB Output is correct
21 Correct 2 ms 208 KB Output is correct
22 Correct 2 ms 304 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 2 ms 304 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 3 ms 308 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 6 ms 300 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 5 ms 308 KB Output is correct
20 Correct 4 ms 304 KB Output is correct
21 Correct 2 ms 208 KB Output is correct
22 Correct 2 ms 304 KB Output is correct
23 Correct 7 ms 336 KB Output is correct
24 Correct 9 ms 332 KB Output is correct
25 Correct 20 ms 304 KB Output is correct
26 Correct 24 ms 304 KB Output is correct
27 Correct 17 ms 304 KB Output is correct
28 Correct 6 ms 208 KB Output is correct
29 Correct 27 ms 308 KB Output is correct
30 Correct 27 ms 312 KB Output is correct
31 Correct 14 ms 304 KB Output is correct
32 Correct 21 ms 312 KB Output is correct
33 Correct 22 ms 328 KB Output is correct
34 Correct 23 ms 308 KB Output is correct
35 Correct 20 ms 312 KB Output is correct
36 Correct 23 ms 300 KB Output is correct
37 Correct 23 ms 312 KB Output is correct
38 Correct 18 ms 308 KB Output is correct
39 Correct 10 ms 304 KB Output is correct
40 Correct 15 ms 452 KB Output is correct
41 Correct 9 ms 436 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 21 ms 304 KB Output is correct
8 Correct 11 ms 384 KB Output is correct
9 Correct 43 ms 492 KB Output is correct
10 Correct 57 ms 316 KB Output is correct
11 Correct 41 ms 328 KB Output is correct
12 Correct 31 ms 332 KB Output is correct
13 Correct 56 ms 296 KB Output is correct
14 Correct 31 ms 312 KB Output is correct
15 Correct 36 ms 316 KB Output is correct
16 Correct 45 ms 328 KB Output is correct
17 Correct 51 ms 328 KB Output is correct
18 Correct 43 ms 432 KB Output is correct
19 Correct 42 ms 296 KB Output is correct
20 Correct 52 ms 452 KB Output is correct
21 Correct 48 ms 308 KB Output is correct
22 Correct 47 ms 352 KB Output is correct
23 Correct 36 ms 328 KB Output is correct
24 Correct 33 ms 316 KB Output is correct
25 Correct 23 ms 328 KB Output is correct
26 Correct 16 ms 344 KB Output is correct
27 Correct 36 ms 340 KB Output is correct
28 Correct 36 ms 320 KB Output is correct
29 Correct 48 ms 328 KB Output is correct
30 Correct 38 ms 384 KB Output is correct
31 Correct 50 ms 316 KB Output is correct
32 Correct 41 ms 456 KB Output is correct
33 Correct 30 ms 464 KB Output is correct
34 Correct 50 ms 348 KB Output is correct
35 Correct 22 ms 336 KB Output is correct
36 Correct 50 ms 308 KB Output is correct
37 Correct 61 ms 328 KB Output is correct
38 Correct 49 ms 328 KB Output is correct
39 Correct 25 ms 376 KB Output is correct
40 Correct 42 ms 484 KB Output is correct
41 Correct 42 ms 456 KB Output is correct
42 Correct 42 ms 304 KB Output is correct
43 Correct 8 ms 208 KB Output is correct
44 Correct 45 ms 312 KB Output is correct
45 Correct 30 ms 428 KB Output is correct
46 Correct 23 ms 324 KB Output is correct
47 Correct 31 ms 380 KB Output is correct
48 Correct 26 ms 468 KB Output is correct